osmophobia
noun
os·mo·pho·bia ˌäz-mō-ˈfō-bē-ə 
: intolerance of or hypersensitivity to smells
Stress aggravated her headaches. She also had associated symptoms of nausea, vomiting, photophobia, phonophobia, and osmophobia.
James D. Collins
James D. Collins also : aversion to or dislike of odors
Migraineurs and other people with headache, particularly those who have odor triggers may develop a fear of or aversion to certain smells, called osmophobia. Kerrie Smyres
Kerrie Smyres 
Word History
Etymology
Greek osmḗ "smell, odor" + -o- + -phobia — more at osmium
First Known Use
1842, in the meaning defined above