Interestingly, you may be experiencing a type of migraine headache aura. Some people suffer from "silent" migraines, which are often precipitated by a strong reaction to smells in the environment, followed by a facsimile phantom odor that mimicks it.
What makes migraine sound possible here is the dazed feeling you have after the scent, and the strong emotional reaction, and the fact that the smell lingers even after you're no longer around the scent.
Heightened sensitivity to smell (whether or not it's pleasant) can be indicative of an olfactory (smelling) migraine aura. If this is migraine-related, you may just go happily along not experiencing many headaches, just the migraine aura. It could however later start turning into actual painful migraine headaches. But not necessarily. Hope it doesn't.
The other clue was you saying you also noticed you smelled the detergent until you got a headache. The detergent may or may not have been the actual cause of the headache, but the correlation is interesting in light of other things you said.