I see, IamLosingMyMind. It is good to mention to your doc.

You know, there could be much more innocent explanations for these symptoms you describe. I think seizure type activity or psychosis would be among worst case causes. Though we can't know what is causing yours, I'll offer some much milder causes that might be worth exploring:

The garbled/incoherent responses?

Could simply be effects from certain medications. Some meds (like Lithium and anticonvulsants) can cause mild non-permanent cognitive impairment. Happened to me on some of these meds. It affected my word finding and quickness and fluency of speech and memory. The higher the dose(s) the worse it got. Also, very sedating meds (i.e. Seroquel) can cause a similar-looking effect. In that case it may be more drowsiness effect, which may be there without blatant sleepiness.

Smoke smell?

A lot of things can cause this in absence of real smoke. Seizure stuff is an extreme cause. Some medications can be innocent culprits. Some like Lithium can leave metallic tastes in the mouth and/or some residual "remnants" which maybe cause some odor? Taste and smell are closely linked senses. Or other things do similar, such as sinusitis. I have the latter and smell smoke when it's at its worst. See Phantosmia: Smoke, Other Common Smells, Causes, Treatment

The more meds you're on, the more likely quirky stuff seems to be noticed. Believe me! There was a time I took as many meds as you, simultaneously, and I experienced weird stuff. I realize there are times it takes that many to obtain stability, but to lower side effects a goal should be to gradually go down on (or eliminate) one or two, if possible, when safe.