Plenty of people don’t start to smell bad 24h after a shower, with or without deodorant. In winter, I’d guess it’s actually most people.
I’ve learned for my own body the sweet spot is to use deodorant every day first thing in the morning and once per 48 hours take a full shower but if I do anything that causes me to sweat on an off day then I need to take a quick shower without any soaps. This keeps my body appropriately not-smelly and my hair doesn’t get greasy from over-washing like it does if I do a full shower daily. This regime also survives both running 5ks and biking 20+ miles in the summer, even if the day of the race/ride falls on an off-day!
Regarding deodorant I get smelly by the end of the day if I do not use deodorant regardless of the temperature. Also, some deodorants are apparently really good for larger folks who have chaffing issues. A friend of a friend specifically recommended slathering it anywhere that chafes first thing in the morning and that can help significantly
I’ve learned for my own body the sweet spot is to use deodorant every day first thing in the morning and once per 48 hours take a full shower but if I do anything that causes me to sweat on an off day then I need to take a quick shower without any soaps. This keeps my body appropriately not-smelly and my hair doesn’t get greasy from over-washing like it does if I do a full shower daily. This regime also survives both running 5ks and biking 20+ miles in the summer, even if the day of the race/ride falls on an off-day!
Regarding deodorant I get smelly by the end of the day if I do not use deodorant regardless of the temperature. Also, some deodorants are apparently really good for larger folks who have chaffing issues. A friend of a friend specifically recommended slathering it anywhere that chafes first thing in the morning and that can help significantly