Why Do Some People Have ‘Strong’ Smells on Their Hands?

Some people have strong smells on their hands because of the oils and chemicals they use or touch. Like when you use soap, it leaves a smell that can stick to your skin. If someone uses a lot of soap or touches things like onions, garlic, or even certain foods, those smells can stay on their hands for a long time, just like how a crayon leaves color on paper.