Follow up: My apartment smells like paint nearly a YEAR after it was painted!
Welp, it's almost been a year since we've moved in and nothing has changed. The paint smell is still there and as strong as ever. We contacted the landlord (he said he couldn't smell anything because he "burned off all his nosehairs and can't smell anything"), I've reached out to air testing companies and I can't afford their services. We bought an air purifier and another dehumidifier+air purifier unit and ran them 24/7 for months. We keep the windows open all the time. And still, nothing.
Everyone in the original post said it's not dangerous, but how? It seems likely that the original coat or primer never dried due to the high humidity (we're in the UK), so it's continuously off-gassing. That means we've been breathing in paint fumes and VOCs for nearly a year. I posted in r/legaladviceuk but was dismissed, but I'm genuinely concerned. It looks like we may renew the lease but I'm so anxious.
Will painting over the wall again fix this issue? How can it possibly not be dangerous? Please, I just want to fix this problem.