I don't think it's a psychological problem. I would imagine some psychological problems could develop in relation to it because it's so terribly frustrating.

I went through a period of about two years where I was extremely sensitive to certain sounds. It was after I had stopped taking a benzodiazepine drug. I thought at the time that I was over the withdrawal syndrome but later, I could look back and see that I had hypersensitivities to many things for a year or two afterwards. They mostly went away eventually.

I wonder if the sensitivity to smells is a separate issue from the sensitivity to other stimuli. I think it is for me, anyway. I have had a problem being around certain smells since I was a teen. I have problems with smoke, diesel, enamel paint, some ingredients used in perfumes & other scented beauty products, and quite a few solvent-type chemicals in general.

These cause a range of reactions from headaches to feeling like I can't breathe well to gastrointestinal problems to dizziness.

I live in a "hippy-ish" area now where people are usually very sensitive to inflicting smells on others.

I think you have a right (maybe a legal right, depending on where you live) to a workplace that doesn't have smells that make you feel ill.

One way to protect yourself against unwanted smells is to dab a bit of Tiger Balm or some other sort of eucalyptus/menthol balm on your upper lip. You could also use an essential oil diluted with almond or grape oil. Choose your own protective smell, in other words.

Regarding the other sensitivities, I know I used to wear earplugs to the grocery store for a while. "White noise" music tracks can help, too.

If you have the right psychiatrist or psychotherapist, they may be able to suggest something helpful. I think the sound sensitivity is called hyperacusis, and there's a whole community out there talking and it and inventing products to protect against it or to relieve it.

You might check out information on chemical sensitivity for your sensitivity to smells.

Good luck! Be persistent!