
or-or SMOKE signals,
The Big Bang Theory Season 11, Episode 10

When the SMOKE clears,
Lincoln will be speaking Hindi...
The Big Bang Theory Season 1, Episode 5

(SMOKE ALARM BEEPING)
The Big Bang Theory Season 6, Episode 19

whatever you do, don't SMOKE it.
Breaking Bad Season 4, Episode 7

Okay, so not SMOKE signals.
The Big Bang Theory Season 11, Episode 10