On Monday, 7 September 2020 11:48:27 UTC+1, wrote:
tabbypurr formulated on Monday :
Hydrogen has more lifting power.

Even so, a hut full would not be enough to displace enough of the
heavier air, to make much difference to the weight of the huts fabric.

I'm not sure why you keep being stupid. The only significant effect it could have is to cause an explosion.