A recent article highlighting that human DNA is ubiquitous in the air has sparked reader debate regarding its implications for forensic science and criminal trials. Commenters warn that detecting a suspect's trace DNA at a crime scene does not definitively prove their guilt, citing risks of environmental transfer and the frequent misunderstanding of DNA statistics by juries. Consequently, they argue that environmental DNA evidence must always be corroborated by other investigative findings rather than being treated as absolute proof in court.