Although I can't open the ABC page, but I searched on that phrase and I came across several interesting article about indoor plantation and Co2.
Also yes, now that I think about it, there are people who live among plants and even on trees. So next time someone telling me about " it's dangerous to have plantation indoor" I might have to drop some bombs.
Nowadays, you have to countercheck everything. I regularly question my own beliefs and knowledge and check for scientific papers.
But even then it is not guaranteed that the research was done 100% correctly or that the research might be invalidated by another research in several years.
We never really finish learning 😊