Hi. When my body is physiologically stressed then I become hyper-sensitive to stimuli. Sounds like hypersensitivity might be what is going on for you.

Just because a product says it is 'perfume free' or 'unscented' doesn't mean that it doesn't have a smell... It just means that they haven't added perfume or scent to it. E.g., soap has a smell that they typically try and mask by adding perfume or scent to it. Just like how you can buy orange juice with 'no added sugar' but already contains loads of sugar in the form of fruit sugars that are naturally present in juice. Most things do have a smell...

The idea of attempting to gain some control over the scent sounds like a good one. Have you thought about checking out essential oils? They come in a variety of scents. You could put a couple of drops of that on your sleeve or on a handkerchief or something. Alternatively, do you have some equivalent of vicks vaporub? It is menthol. People sometimes smear it over their upper lip when they have a cold because the menthol vapors help keep their nose clear... It would help numb your sense of smell.

Sound is harder... Little bones in the ear that move... Even earplugs... When I'm very stressed out I lie in bed at night and the smallest sound sounds like the dripping tap for chinese water torture. Have you heard of that? They keep a person in sensory deprivation conditions (no sounds or smells or anything). Then they pin them down and have a single drop of water intermittently drop onto the exact same place on their forehead. Drip... Drip... Drip... Apparently it is excruciating. Well... Sometimes when sound is driving me nuts I do my best to put myself in a sensory deprivation chamber... Only things are never completely still... Any little thing... Is like that drip... Drip... Drip...

Sometimes the solution is the reverse... Like the vaporub thing... Extending... Going to a loud rock concert? Not sure...

Anyway... I hope you feel better soon.

Uh... It could be psychological... But it could also be neurological. Odors... Sounds... It might be worth mentioning to a neurologist...