How to sign: draw air into, and expel out of, the lungs
"I can breathe better when the air is clean"; "The patient is respiring";
See also: exhale, breathe out, breathe in, inhale, expire, inspire
Similiar / Same: take a breath, suspire, respire
Within this category: choke, exhale, hiccup, hyperventilate, inhale, respire, sigh, snore, wheeze, yawn
How to sign: expel (gases or odors)
Similiar / Same: emit, pass off
Categories: discharge, eject, expel, release
Within this category: bubble, burp, exhale, force out, radiate
How to sign: take a short break from one's activities in order to relax
Similiar / Same: catch one's breath, take a breather, rest