That is another issue I was thinking of. Poison, that is a strong word but I think you did find a good alternative wording to define what is toxic. Actually, I think "toxic" specifically refers to the effect exerted on you (as the subject).

It doesn't even really say anything specific about the other person's personality, instead what it focuses on is the effect of the behaviour/whatever the person does/whatever's going on in the relationship. It points out how it *affects* you. In contrast, to me words like "abuse" point out the action itself. But that's maybe just my own personal view/interpretation of these words.

So this is the same you are describing, I think. And I do find that I have to avoid such stuff even more while dealing with trauma and depression. Because I take longer to clean it out than I used to, so that is why I have to pay so much attention to avoid all that for now.