[splaytreemap]

Some companies (Southwest Airlines for example) will refuse service to you if you're wearing a non-standard mask. Wearing the disposable blue surgical masks is the best bet if you don't want to be randomly denied access to somewhere you're going.

[r00fus]

I wear reusable masks every day. If I go on a plane, yeah I also have disposable masks for those events.

Do you have any non-travel related examples where they don't also hand out said masks?