Relax: all people and other animals smell, it is an important basic part of our natural recognition system, disrupted by scents and chemicals. Why do we kiss people as a greeting? It is perfectly natural, to sample their smell.
Many animals depend for their health and nutrition on the sense of smell, but nowadays most humans mainly use it subconsciously. Having said that, we are happy to smell a bonfire, a good meal, Chanel No5, or fine wine. A sensitive friend of mine told me he could often respond to the smells of confidence, fear or agitation during business negotiations. Scientists say that this is an element of intuition.
Doctors have found it is possible to diagnose many metabolic conditions from smell, so now medical assistance dogs are trained to detect ailments, including diabetes and cancers, instantly snd cheaply without lab tests (not just bombs, drugs and firearms!)
One of HM Ministers told the House of Commons that until the late nineteenth century, most middle-class people only bathed twice in a lifetime, at birth and death, "and on both occasions rhe process was involuntary!" Our metabolism is naturally sweet-smelling, but sadly disrupted by clothing, and by environment. So we do not need or want chemical deodorants, and certainly not aluminium antiperspirants, just soap and water!
When we and our hormones get older and fatter, our personal smells change. Body fluids always leak, so clean clothes are important; some diets such as garlic or cigars may leave a nasty smell; urban environments and closed windows are unhealthy; and in the country you might fall into muck! But for almost everyone, a daily shower or basin, soap and toothbrush, and change of underclothes is necessary and sufficient hygiene.