Hello , over the last 2 months my 2 years old maine coon male has had this problem twice. (With EXACTLY two months apart , even hours, apporx midnight). Me and my gf wake up in the middle of the night hearing some weird scratching noises, my cat was more-or-less flat on his belly doing weird swim-like motions. Head a little bent, alot of sniffing and biting everything he can find in his path. (Video attached later). We went to the vet after a few hours and it was gone...we did an xray and some other tests but everything seemed fine, she suspected epillepsy...now after 2 months again, we went to another vet immediately and was suspected a (benzene?) Poisoning or (meningities, but unlikely because no temperature) . Got some injections and put him to sleep. After sleeping hes pretty much normal now (happened 2 days ago), eats like crazy and goes to thr toilet normally again...very strange. Maybe someone has some input on this matter and maybe experienced something similar. We had a rosemary plant (and basilic) which he threw down in the night he had the seizure, maybe he ate some, but no signs of that. Of course we threw the plants away and everything with smell (had some candles with smell too) Thanks for reading. I will try to attach videos.