Hrm. It's been a while, but I feel the need to weigh in.
When I had heard about this, that Jollyjack had taken a whack at a fetish of mine, my immediate reaction was one of confusion, to be honest. Assorting Jollyjack with this particular deviancy had never crossed my mind, but it was intriguing. I bought the comic, and gave it a read. Well done. Although I am an inflation fetishist, this one wasn't really my thing, but it is very well done. Excellent, over-exaggerated proportions and a participant having a good time of it. Good sense of gravity and immense size, too. If Jack takes another whack at something similar, I would most gladly welcome and pay for it.
Your enjoyment will depend strictly on your personal kinks. The last third or so is much like JJ's "Tentacle Possession" only with property-destroying massive inflation* instead of demon eyes and freaky tongues.
*NOT gigantism, where everything grows proportionately; this is more like the movie "Slither."
No. And I should've been clearer about the "Slither" reference, it's just ballooning, no "pop," and she seems pleased with it in the final panel. (And the swelling is SEMI-proportional; some entire body parts get bigger, because fantasy.)