Genuine question: would you think this about any post that showed a company in a positive light? Or are there specific things about this post that tell you it's an ad?
Apparently the whole "quirky unique collective nouns for different things" thing was a victorian meme. People 150 yes ago just made them up to be funny, and now they're solemnly repeated as mystical English dictionary words from the dawn of language.
Those are all good examples of the sort of thing you mean, but it's not a definition. I think if you want to be able to put into words where to draw the line, you'll need to define this term more clearly. If that's too difficult, then be satisfied with judging each situation as it comes, your instincts will help guide you.
But go easy on yourself, you shouldn't feel bad for doing what you need to do,
My hypothesis: the clickbait factoid might be talking about the amount of nicotine that exists in a cigarette butt, which might be different from what a child would practically get in their bloodstream after eating said butt.
I think I've been in this boat without necessarily realising. Last film i saw at the cinema was the hobbit. I had no idea they'd decided to split the story from that short children's book up into multiple films, so I was very confused and disappointed by the end.
I'm no expert but I'm fairly sure that is basically true in a way. As per zr0's top-level comment. Forms of life that can make do with less cellular respiration, for example by using external sources to regulate temperature (cold- blooded), don't need to invite as much oxygen into their cells, and so they get less weird damage over time.
Mammals in general have not adopted this strategy.
(I think they're exaggerating to emphasise how bad other things are for comedic effect.)