Accidentally left one of the nobs on the stove on for like. 40 seconds or smth (I have no idea how because I didn't touch it with my hands, must've hit it with my side) &amp; I smelled gas and the instant I saw it was turned I turned it off, but now my brains like "YOU ARE GOING TO DIE OF GAS INHALATION" despite the fact I turned it off &amp; have opened the windows &amp; door... I hate anxiety.