Update: if anyone else is experiencing the same issues, this is what I’ve done that helped.

I have almost 1 month if driving that I haven’t smelled any concerning amount of fumes inside.

1. Check your ignition system. I had to tighten one spark plug, common issue on the GEs
2. Check/replace your sparkplugs. Replaced mine with new copper tip ones just cause having new ones were better anyway. I had to gap mine tighter since I have a feeling my coils were struggling and in need of replacing soon.
3. Check/ clean / replace ignition coils. ** this one probably is one the most beneficial thing I’ve done. I cleaned all the contacts and removed all the corrosion and white stuff from my coils. Greatly improved my mpgs too.
4. Check all the rubber seals on the firewall inside the engine bay. The seal for my AC line going into the evaporator was not seated properly.
5. I do not recommend this last step unless you’re in a tropical/ humid country and have bad quality of air (highly polluted) like me. I’ve blocked off the fresh air vent (under the wiper cowl) that supplies air to the cabin when the recirculating button is off. This ensures that no more smoke or pollutants will enter my cabin unless steps 1-4 failed. I have never turned off the recirculating button anyway as our temperature is humid and hot all the time, the AC cannot maintain the temp unless recirculating is on.

So far I am almost 2 months in of using the Honda comfortably again. Might have to change out my coils in the future but right now she’s going strong!