You can't trust a study which relies on quackery!
Clearly, "Long-Covid" (long-haul COVID) is a scam just like COnVID-19 itself (which was never and will never be isolated). If You research into the germtheory deception, You will find out that every virus research
(including vaccines ofc) is based upon quackery. Keep in mind that the nicotine industry tries everything to lure in new customers (for example, they claim nicotine helps to fight chemtrail poisoning).
If i was You, i would rather not risk getting addicted to this devastating drug. (i realize that nicotine in its pure form isn't THAT toxic, but still You will get hooked
and to get off is HARD and sucks, trust me). Also, it messes up Your reward-pathway and You will lose focus on Your real life goals. It does destroy your gut-feeling too, leading to poorer lifestyle choices which in turn will lead to diseases. Greetz Kate