stankster lean
When in a sitting position, leaning forward slightly after farting to catch a whiff of your flatulence. Because after all, one's own farts actually smell pretty good, don't they? Must be done slightly and imperceptibly when around company, lest you give away the fact that you are both the "smeller" and the "feller".
"Oh man, who cut the cheese?"
"Must've been Bob. I saw him doing that stankster lean."
"Must've been Bob. I saw him doing that stankster lean."