Yes. https://arstechnica.com/science/2023/05/human-genomic-bycatch-our-dna-shows-up-in-environmental-samples/ https://arstechnica.com/science/2023/05/human-gen

Yes. https://arstechnica.com/science/2023/05/human-genomic-bycatch-our-dna-shows-up-in-environmental-samples/ https://arstechnica.com/science/2023/05/human-genomic-bycatc... ("We can ID people from DNA that shows up in environmental studies")