{"id":11687,"date":"2026-10-26T10:57:56","date_gmt":"2026-10-26T02:57:56","guid":{"rendered":"https:\/\/oxy-boss.com\/?p=11687"},"modified":"2026-10-26T10:57:58","modified_gmt":"2026-10-26T02:57:58","slug":"geruch-weiche-ueberdruckkammer-ursachen-abhilfe","status":"publish","type":"post","link":"https:\/\/oxy-boss.com\/de\/odor-in-a-soft-hyperbaric-chamber-causes-and-fixes\/","title":{"rendered":"Geruch in der weichen \u00dcberdruckkammer: Ursachen und Abhilfe"},"content":{"rendered":"\n
\"New<\/figure>\n\n\n\n

Open the zipper on a brand-new hyperbaric chamber<\/a> and the first thing most people notice isn’t the pressure. It’s the smell. Something sweet, chemical, a bit like a new car.<\/p>\n\n\n\n

Open the zipper on a chamber that’s been sitting folded in its case for a month and you get a completely different smell. Flat, earthy, a little like a damp towel.<\/p>\n\n\n\n

They sound similar in a complaint (“my chamber smells”), but they come from two different places, and they need two opposite things from you. Handle them the same way and the smell gets worse.<\/p>\n\n\n\n

This piece walks through how to tell the two apart in about 30 seconds using nothing but your nose, what each one actually is, and what to do about it. On the way we’ll cover the questions that people quietly wonder about \u2014 how long a new chamber keeps smelling, whether that smell is a fire concern, whether a used chamber with a lingering odor is a bad buy, and the two parts of the system that get blamed for a smell they didn’t make.<\/p>\n\n\n\n

Smell it, don’t guess<\/h2>\n\n\n\n

Four questions, no equipment:<\/p>\n\n\n\n

What you notice<\/th>New-material off-gassing<\/th>Moisture and growth<\/th><\/tr><\/thead>
How does it smell?<\/td>Sweet, solvent-like, “new plastic”<\/td>Musty, earthy, wet-laundry<\/td><\/tr>
When is it strongest?<\/td>Right after you close the door<\/td>A few hours after you finished a session<\/td><\/tr>
Where is it worst?<\/td>At seams, along the inner wall, on the mattress cover<\/td>Under the mattress, inside hoses, around the fan<\/td><\/tr>
What does it do over two to three weeks of regular, ventilated use?<\/td>Drops noticeably<\/td>Stays flat or gets worse in humid weather<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n

If three or four of your answers line up with the left column, you’re dealing with off-gassing. If three or four line up with the right, you’re dealing with trapped moisture. If they split 50\/50, start with off-gassing \u2014 moisture problems respond quickly to the right action, so if a dry-out doesn’t help in a few days, you have your answer.<\/p>\n\n\n\n

The important part isn’t the chart. It’s that the fix for one is the opposite of the fix for the other.<\/p>\n\n\n\n

Cause A \u2014 the chamber is still off-gassing<\/h2>\n\n\n\n

A soft chamber<\/a> is made of TPU (thermoplastic polyurethane) layers, heat-welded along the seams, with foam and fabric trims around the mattress and the entry zipper. All of those materials come out of the factory holding small amounts of volatile organic compounds \u2014 the solvents and processing aids that were part of making the sheet, the mattress foam, the zipper tape. Those compounds leave the material slowly at room temperature. That is off-gassing, and the U.S. EPA describes it as normal VOC behavior for new household and industrial products.[^1]<\/p>\n\n\n\n

So the smell is the chemistry of a brand-new object doing exactly what a brand-new object does.<\/p>\n\n\n\n

A few things worth knowing before you decide it’s a defect:<\/p>\n\n\n\n