I have suffered with severe nasal allergies as a kid. And had a hard time smelling anything because my nose was stuffed. I realized that I developed a sense of

I have suffered with severe nasal allergies as a kid. And had a hard time smelling anything because my nose was stuffed. I realized that I developed a sense of "smell" in my hand. I could actually feel the air. And tell what it smells like. For those who can't believe it, smells have a pH, humidity, heat capacity, temperature, density, and pressure to them. So if you can train your skin to be sensitive and concentrate on those things you can feel smells. It was not long till I realized that people give off a certain odor. And those odors are often related to the germs on their body. And the food they ate. Sometimes I could even tell if the person was sick. I never developed a method of detecting illnesses simply by waving my hand on the person unless I was acutely familiar with the sickness, but if we can develop machines to detect "smell" (a fact I did not know) then we can definitely detect machines to scan people as they walk through a door and tell what germs they carry. Of course my dream powers are to tell what antigerm ointment each person should use.