I have three macro lenses, a K F4 50, a DFA 50 F 2.8 and 100 Macro F 2.8 . All Pentax brand.
I like them all, but prefer the 100 as it gives me more focal length, for insects , as it's advantage is... it doesn't 'bug'
them as much, with me being further away from them as a subject. Same thing with portraiture of people.
I've been intrigued by the 35mm Macro as I think it would also be good as a moderate wide angle, walk around lens. But on the other hand you would have to get fairly close to the live subject with the 35mm focal length. With insects or small animals I think you would spook them more easily, which is not a good thing, particularly with bees or hornets, which are interesting as subjects...or part of the deal if you like taking pix of flowers in outside gardens. Matters to consider.
Wish you well on your 'gas attack' .