The reason I posted this was a few weeks ago, a patient of mine came with her scans and and tests done at Dubai. The moment she opened her folder it felt as if my uncle( who lives in Muscat, a city in oman) was back visiting. Things from the us have a distinctive smell too, even postcards, letters, toys or whatever. My dad came back from Canada a few months back and all his stuff from there again had a unique smell, different from all the other countries. Since I'm not the only one, what is due to? Air borne particulate? Pollen and dust content?