The best way is to cover your nose and mouth with a wet towel.

最好的方法是用湿毛巾捂住口鼻。

youdao

Apply the treatment to the hair, from the roots to the tips, cover with a plastic cap or towel, and wait for 15 to 20 minutes.

用深层护发素从发尾处理到发梢，用浴帽或者毛巾包裹，保持15 - 20分钟。

youdao

Cover the dough with the same towel or plastic wrap and let it sit for 20-30 minutes.

再次用保鲜膜或者毛巾盖住面团，静置二十到三十分钟。

youdao

Cover with a damp towel and let rest 15 to 20 minutes.

CNN: Pizza Dough

Cover the loaves with plastic or a damp towel and let rise for 1 hour 45 minutes.

NPR: U.S. Team Readies for World Baking Championship

Nudists always cover the surfaces they sit on, often carrying a small towel with them for that purpose.

FORBES: Wine, Cheese, Couchsurfing, and Nudity