They really aren't when compared compared to other common otc drugs. At least near me, they sell huge bottles with 500mg pills and say "take these 2 at a time every 6 hrs" (they also have a warning not to take more than 4000mg, but still, you get there pretty fast at the recommended dosage) You take them 4 times in one day instead of the recommended max of 3 and you're in the toxicity zone.

ibuprofen has a much smaller dose, is more effective, and can be taken at the recommended dosage much longer without worrying about total daily intake coming into play.

the ratio between a toxic dose and an effective dose is more like 2:1 for acetaminophen vs like 5:1 for ibuprofen (maybe more?)

may wanna give some consideration to edibles

Depending on the specifics of your asthma, you might be able to get away with some dry herb vaping. But otherwise, edibles would be your best bet. They do make edibles with different amounts of THC and CBD.

I definitely wouldn't recommend smoking in that case, but vaping you could try if you make sure the vape is not getting too hot. If you do vaping right it's basically warm, spicy mist - still may make you cough, but could be manageable if you're careful. The effect is a lot more immediate from vaping, is the only reason I'd at least consider it in your case. You can also try ingesting it orally for a slower uptake, though I'm not sure what a good dosage or way would be for you. Can't really OD on CBD though, so don't stress it too much. If you go that way just beware, there are a lot of snakeoil products out there with CBD. I'd try going for a basic oil extract from a reputable vendor that ideally also sells whole flower, that should give you a pure, reliable, versatile solution for oral ingestion. You could put it on food or even bake with it (I think), take it any way you would ingest oil. Alternatively, you can solve it in alcohol, but I don't think that's a great idea for your use case.

There's probably also CBD in pill form some way or other, I'm sure

The addiction part isn't necessarily true. I've taken Kratom for many months at a time and have never felt compelled to use or had withdrawal symptoms after stopping cold turkey. I do have a friend that said he was straight hooked on it but that hasn't been my experience. Also don't feel like you really build up a tolerance that fast because if you take too much it starts to feel like standard opiates where you become very eepy and nauseous. I only take it for fairly common aches and pains though.

Ask your doctor, esp since they aren't necessarily a good option for all types of chronic pain. There's OTC units but they aren't as good as what you can get with a prescription. Also, with a scrip they're covered by insurance and might be able to do a try-before-you-buy thing with doctor supervision.

Tramadol is a shit drug imo, compared to other opioids its pain relief is questionable at best. I would talk to your doctor about trying meloxicam and gabapentin.