How can i smell good all day long?

different people have different types of sweat glands, and a different body physiology as well. that;s why we all smell different. a good way to eliminate odors is to apply some tal powder on your sweaty area. there are little packs of it avaiable to fit in your bag. also, maybe the perfume that you're using doesnt mix well with your natural scent. try a milder cologne, and bring a small bottle in your bag too :)