Not a logical conclusion.
If it had child porn on it the owner of it would be arrested. Right? Right?
At this point, anybody who looks at it has to assume it has no such illegal material on it.
Remind me again what it means actually to "Test Positive?" Motor oil, tap water, miscellaneous fruits, etc.
"We observed that all soft drinks (Coca-Cola, Coca-Cola Zero, Fanta-Orange, Orange soft drink), energy drink (Red Bull), alcoholic beverages (vodka, whiskey, and brandy), commercially bottled mineral water, and carbonated mineral water caused the appearance of a red test line."
https://www.eatthis.com/news-drinks-false-positive-covid-test/