He didn't actually fully inhale, or his voice would have been a lot lower.
Two fun facts about SF6:
As a greenhouse gas, it is 22,000 times more potent than CO2. The amount he released is equivalent to a ton of CO2. So what.
On a more immediate, personal note, SF6 can hurt you two ways. It is an asphyxiant which will collect in low spots. And the impurities in SF6 are as toxic to breath as fluorine or hydrogen fluoride, so be sure to get the pure stuff to breathe.
Two fun facts about SF6:
As a greenhouse gas, it is 22,000 times more potent than CO2. The amount he released is equivalent to a ton of CO2. So what.
On a more immediate, personal note, SF6 can hurt you two ways. It is an asphyxiant which will collect in low spots. And the impurities in SF6 are as toxic to breath as fluorine or hydrogen fluoride, so be sure to get the pure stuff to breathe.