yes, but it is can be a larger than usual problem in some groups.

I know anime conventions in Minnesota struggled with that a lot in the 2000s. It took about half a decade of posters, campaigns, and a small group of people who were willing to be blunt and tell people "this sign is directed at you my dude"

It all did lead to improvements though! It is vastly better than it was back then.

Alternatively there was the MTG asscrack meme which did increase belt sales.

It's one thing to have other smells than what you are used to, but just because you don't smell your own body odour doesn't mean everyone else doesn't. If you struggle to shower more than once pr week, or just sweat a lot, you need to realize and implement a shower when meeting other people rule.

I'm not saying you have to shower every day. I'm just saying if you struggle to shower for yourself, make it a rule to shower for others.

If you say fuck others, they can swim in my stink, then you can fuck off from these events or accept people making comments about it.

I think so, "smells you don't like" can include overpowering laundry products or aftershave/cologne/perfumes. Dear lord some people at work I actively steer clear from because otherwise I go into fifteen minute sneezing fits.