How to smell better?

I’ll be taking part in a course in May, and the my home is a 10 min ride (30-40 min walk) away from the nearest bus station. I’m also on a fitness journey so I’m thinking of walking to the bus station. The only thing concerning me is that I live in a tropical country, so summers are brutal. I’ll probably be sweating a lot if I walk that much, and there won’t be any showers or changing areas in the institute. I’m thinking that since there’s a 1hr bus ride before the class starts, I’ll be able to cool off and wont be drenched in sweat by the time I get there. That leaves the smell. What should I start doing to remove BO/smell better naturally that it won’t be a problem for me if I start to walk a lot?