I mean, seriously. Does he take the smogulous outer-air and run it through 10 dyson air purifiers or something?
OHKAY PREPARE TO HEAR THE WORST/BEST HEADCANNON EVER.
Once upon a time, right after the last truffla tree had fallen, the Once-ler decided to plant another tree.
THE GROUND WAS TOO POLUTED.
So something unexpected happened. To the Once-ler’s horror, a frightening little creature rose from the soil. It was a disproportionate man with funny hair. The Once-ler brushed his hair and then discovered that even though this little tree man was corrupted, polluted, and evil…
…he could make air.
PLEASE DON’T KICK ME OUT OF THE FANDOM I LOVE LIVING HERE.
^^^^ BAHAHAHA YES. THIS. HEAD CANON ACCEPTED.