He farted in her general direction and gave her conjunctivitis…

In the US some states call that ‘internal possession’, it’s mostly used so that they have something to charge teenagers with when they catch them high. Dunno how the UK compares.

In Sweden they can (and do). The police here take about 55 000 blood and urine samples per year for drug use convictions. It's awful.

Idk

Once the substance is in your body it is denatured. Therefore no possession charge. Only of you are driving etc is it a problem

She's probably more worried about probable cause for a search

Edit :ianal but learned this at uni in some sub course

I remember the last time I got all hopped up on some sinner's spinach. Man did I do some violence... I went out a straight murked some (pani) popos and a bunch of innocent crackers. I really gotta start limiting my starch intake.

It's waaay safer than alcohol especially in smoked straight off the plant non GMO strength weed but yeah a processed 200-300mg strength edible can absolutely cause psychosis in the wrong person (it's funny, one of my old psychiatrists actually said something to the effect of 'they're breeding the weed waaay stronger than what my generation was smoking in college...). I've had a looot of schiz spectrum patients who just can't admit that weed or especially edibles are a problem for them and causing their psychosis keep winding up in the hospital.