You mean like the guy who in 2018 claimed to have cured himself of lactose intolerance for a while by ingesting a gene-modifying Adenolike virus? [1] No fancy lipid-bubble-riding mRNA necessary.

The rest of the channel is pure biohacking gold. The yeast spider silk video is much recommended.

[1] https://www.youtube.com/watch?v=J3FcbFqSoQY