We used to have the capability to construct a poll - not sure when or why it went away.
If we had a poll, I think 'garbage' smell should be included - not so much physical garbage, although NYC could relate - I mean garbage politics and policies that are driving people away to other states.
Speaking of outward migration, the smell of 'money' is also a contender, since it costs way more to live in NY State than anywhere else besides CA.