Using air to inflate things and propel yourself is certainly an interesting mechanic for a platformer! Even in the small number of levels, I was able to enjoy the various implementations of the main mechanic. I also like how the amount of pumps from the gas canisters are limited to one use, encouraging the player to be more strategic with how they use their puffs of air.
I have similar criticisms as previous comments, the main one being that I wish there was a reset button. Since the game was short, it didn't bother me that much, but it would be welcome in a longer version of the game. Also, during the boosting tutorial section, you could get stuck on the bottom and forced to reset due to placement of platforms.
I think this concept could be taken in many unique and interesting directions. I'm curious what other level ideas could come from it! :)