It might be that's because I went to India by hitchhiking, and did that through South-East Asia, and that took quite a bit of time 🙂 My body had plenty of time to incrementally adjust to the climate as I was making my way southwards. I'm guessing that you mostly spend your time in spaces with AC and your body never gets acclimated to the 40°C temperatures? Or maybe those temperatures take place so seldom where you live that you've has no chance to adapt? I'm not really used to AC, so I keep it off if possible even where it's available.

Anyways, if you look at videos of everyday life of locals in Goa, they aren't really constantly dripping sweat. At least I don't have any memory of having sweated very much during my time in Laos, Thailand, Burma and India. Even if there was some level of constant sweating, it absolutely hasn't been enough to disturbing in smell or visually, because otherwise I'd have a memory of it.