honestly bro both of those examples are specifically mentioned in the attitude section as places NOT to smoke DMT.

:!:

edit:

mkay the water bodies isnt mentioned, and to stay on topic with the OP

It hasn't happened to me, but yeah there's a reason public places aren't condoned.

But i'll link the forum posts about why bodies of water are very much advised against.

Oly- I lost a friend. dmt and setting was the reason.