Why Your Blackout Curtains Smell — First: Is It a Problem? Then: What to Do About It
New blackout curtains can sometimes have a noticeable smell right out of the package. It may remind you of new plastic, packaging, coating, or fresh factory materials. In many cases, the odor fades with fresh air and time.
Still, it is worth handling the first few days thoughtfully, especially if the curtains are going into a bedroom, nursery, small apartment, or any room with limited ventilation. The goal is simple: reduce trapped odor, check for moisture issues, and decide whether the curtains are improving enough to keep.
This guide explains what new curtain smell usually means, how to air out blackout curtains safely, when a musty smell points to a different problem, and what to look for when choosing blackout curtains for sleeping spaces.
Most new curtain smell fades, but pay attention to how it behaves
A light “new fabric” or “new materials” smell is fairly common with blackout curtains. These curtains often include more than one layer, such as a face fabric, blackout backing, coated liner, or bonded construction. Those added layers can hold onto packaging odor longer than a simple sheer panel.
What matters most is whether the smell gets better with ventilation. If the odor is clearly fading after a few days, that is usually a good sign. If it feels sharp, causes irritation, or stays strong in a closed room, treat it more cautiously and keep the curtains out of sleeping spaces while you decide what to do.
Do a quick smell check before installing blackout curtains
Before you hang new curtains in a bedroom, take a minute to identify what type of odor you are dealing with. A new-material smell and a musty smell need different fixes.
| What you notice | What it may suggest | Best first step |
|---|---|---|
| Plastic-like, packaging-like, or factory-new smell | Typical new material odor | Unfold the curtains fully and air them out in a ventilated space |
| Smell improves noticeably with fresh air | Odor is likely fading normally | Keep ventilating and wait before placing them in a bedroom |
| Sharp odor that irritates your eyes, throat, or nose | Too strong for comfortable indoor use | Move the curtains away from living and sleeping areas; consider an exchange |
| Musty, sour, or damp-basement smell | Possible moisture or mildew issue | Check the window area, fabric, and packaging for dampness or spots |
| Odor has not improved much after extended airing | The material may not be a good fit for your space | Contact the seller and review return or exchange options |
What to do first: air out the curtains before masking the smell
Do not start with sprays, candles, or air fresheners. They may cover the smell for a short time, but they can also add more scent to the room. Fresh air and space are usually more useful.
Move the curtains to the best-ventilated area you have, such as a laundry room, garage, covered porch, or a room you do not sleep in. Fully unwrap the curtains and open every fold so trapped odor can escape instead of staying concentrated in the fabric.
A simple airing-out routine
- Unwrap and unfold the panels. Odor often stays strongest inside folds and packaging.
- Create cross-ventilation. Two open windows, or a window and a door, usually works better than one cracked window.
- Keep them out of bedrooms at first. This is especially helpful for nurseries, small rooms, or rooms used for sleep.
- Avoid heavy heat at the beginning. Warmth can make the smell stronger in the short term, even if the odor is gradually fading.
- Wash only if the care label allows it. Some blackout linings and coatings can be damaged by heat, agitation, or improper drying.
- Use neutral odor control if needed. Activated carbon bags or an air purifier can help reduce lingering odor without adding fragrance.
100% Blackout
Better sleep
Noise Reducing
Energy SavingIf the curtains smell musty, check for moisture
A musty smell is different from a new-material smell. It often points to moisture, mildew, damp packaging, or condensation near the window.
Before you hang the curtains, check the fabric, lining, bottom hem, and packaging for dampness or visible spotting. Also check the window area, especially if the room has condensation, single-pane windows, or a sill that often feels damp.
If the care label allows washing, clean and dry the curtains completely before use. If the curtains are not washable, the smell is strong, or you see visible spotting, an exchange may be the simplest and safest option.
For regular care after installation, review TheHues' guide on how to clean curtains before washing or steaming any lined curtain.
Why blackout curtains can smell stronger than sheer curtains
With sheer curtains, you are mostly dealing with woven fabric. With blackout curtains, there may be an added blackout layer, coated backing, bonded liner, or thicker multi-layer construction designed to block light.
That added construction is what helps the curtain darken a room, but it can also hold onto new-material odor longer. This does not automatically mean the curtain is unsafe. It does mean you should air it out before placing it next to a bed, crib, or frequently used seating area.
Why the smell may be stronger in sunlight or warm rooms
If the odor seems stronger when the afternoon sun hits the window, that is common. Heat can make many new materials release odor faster, so the room may smell stronger for a short time.
That is one reason a sunny bedroom with closed windows can feel worse than a breezy living room. If possible, air the curtains out in a ventilated space before putting them in direct hot sun for long periods.
If heat control is also part of your goal, compare thermal curtains and blackout options carefully. A curtain can help with light and comfort, but the right choice depends on room exposure, lining, fabric weight, and installation.
Who should be more cautious with new curtain odor?
Some rooms and households deserve a more conservative approach. If the curtains are going into a nursery, bedroom, or small room with limited airflow, air them out elsewhere first whenever possible.
If someone in the home is sensitive to strong odors, has asthma, allergies, chronic sinus irritation, or frequent headaches from fragrances, do not force a curtain into daily use while the smell is still strong. Choose a setup that feels comfortable in the room, not just one that looks right online.
How to choose blackout curtains if you are sensitive to smell
If odor is one of your main concerns, think about construction before color. A darker curtain is not automatically better at blocking light, and a thick backing is not always the only option.
Start by comparing these details:
- Construction: Is the blackout effect coming from a liner, dense weave, coating, or bonded backing?
- Room use: Is this for a bedroom, nursery, media room, or occasional-use space?
- Ventilation: Can the room be aired out easily after installation?
- Care instructions: Can the curtain be washed, spot cleaned, or dry cleaned?
- Swatches: Can you order samples before committing to full panels?
If you are unsure about color, texture, or lining, start with curtain swatches. Swatches cannot show every detail of a full curtain installation, but they can help you judge fabric feel, color, and initial odor before placing a custom order.
What certifications can and cannot tell you
Certifications can be helpful, but they should not be treated as a promise that every person will experience a curtain the same way. Odor sensitivity varies from home to home.
Textile certifications may help screen for certain substances, while indoor air programs may focus more directly on emissions. When available, they can be useful filters. Still, no label can guarantee “zero smell,” especially right after packaging is opened.
The most practical approach is to combine better product information with good habits: review materials, use swatches when possible, air out new curtains before bedroom use, and follow the care label.
Common mistakes to avoid with new blackout curtains
Do not assume “no smell” means no airing out is needed
Even if the curtains smell mild, airing them out before bedroom use is still a good habit. It helps remove packaging odor and makes the room feel fresher from the start.
Do not treat musty odor like normal new product smell
Musty odor may mean moisture. Check the window, sill, packaging, and curtain lining before you install the panels.
Do not use high heat unless the care label allows it
Some blackout liners and coatings are sensitive to heat. Avoid hot dryers, strong steam, or direct heat unless the manufacturer clearly allows it.
Do not cover the smell with fragrance
Fragrance sprays can make the room feel more irritating, especially in bedrooms. Fresh air, time, and neutral odor control are usually better first steps.
72-hour checkpoint: keep airing out or return?
After a few days, check how the curtains are doing before moving them into a bedroom or nursery.
| Status | What it means | What to do next |
|---|---|---|
| Clearly weaker odor | The smell is fading normally | Keep airing out until the curtains feel comfortable indoors |
| Still noticeable but improving | The curtains may need more ventilation time | Keep them out of sleeping spaces a little longer |
| Still strong or irritating | The material may not be a good fit for your home | Consider contacting support for an exchange or return |
| Musty or damp smell | Moisture may be involved | Check for condensation, damp fabric, or visible spots before use |
FAQ about new blackout curtain smell
Is it normal for blackout curtains to smell when new?
A mild new-material smell can be normal, especially with lined or coated blackout curtains. It should become less noticeable with ventilation and time.
How long should I air out new blackout curtains?
A few days is a good starting point. If the curtains are going into a bedroom, nursery, or small room, keep airing them out until the smell is clearly fading and comfortable to you.
Can I wash blackout curtains to remove the smell?
Only wash them if the care label allows it. Some blackout curtains include linings or coatings that can be damaged by heat, machine washing, or tumble drying.
Why do my blackout curtains smell worse in the sun?
Warmth can make new-material odor more noticeable for a short time. Ventilation usually matters more than heat, especially during the first few days.
Should I return curtains that still smell?
If the odor remains strong, causes discomfort, or does not improve after airing out, returning or exchanging them may be the better choice, especially for a bedroom or nursery.
Final takeaway
New blackout curtain smell is usually something you can manage with fresh air, patience, and smart placement. But it should not be ignored, especially in rooms where you sleep or spend long hours.
Start by airing the curtains out fully, avoid masking the smell with fragrance, and check whether the odor is fading. If the smell is musty, sharp, or not improving, treat that as a sign to pause before installation.
When choosing new curtains, compare fabric, lining, and room needs together. Start with blackout curtains if darkness is the main goal, review the curtain liner guide if you are comparing opacity and construction, and use the free design service if you want help choosing a setup that fits your room before ordering.
