yes
during the Vietnam War, American soldiers were strictly told to not wear deoderant or shampoo or anything that may attract smell through solvents to bathing oils
unfortunately, as stubborn some soldier were, they refused to use brown soap and get dirty in the trechorous, yet beautiful jungles of Vietnam. many Vietnamese soldiers utilized the smelling sense to take down US soldiers according to scents and territory control.
let alone the tactics, your senses can achieve a great deal if you focus your mind and let them evolve
also, you rememer in X-men the movie? Wolverine has super smelling senses, they do not exagerate that ability that humans can achieve. in fact, in the Special Forces, smelling is very important, as reaching the extremes of the human body is necessary during covert ops.