Why should we know better?
The majority of us are not scientists, we are end users. We simply don't know - pretending otherwise just makes us less credible.
Of course I want it to be true, and all indications are that it is true - but I don't think we can say it's a fact is all I am trying to say.
Because it's already been researched. I'm not talking about vaping, I'm talking about second-hand vapor. Look up a MSDS for PG and see what the safe exposure level is. It's far, far higher than the minuscule amount from being in the room with a vaper. Same with nicotine. It's already considered harmless in small amounts, just like caffeine and we know it's only present in miniscule amounts. We don't know the long term health effects from sucking lungfulls, but the second-hand vapor poses no threat to a budgie, let alone a person.
can easily be summed up in a word that I try to apply in life in general: moderation! If something is "safer" and/or not yet known to be harmful, then limit exposure to it. I, like most of you, vape a lot and am enjoying being off the stinky analogs! If I vape around others, I hold my hits longer to reduce the amount of exhaled vapor and direct my exhalations away from anyone around me. Did we used to blow cigarette smoke in the face of others? I do find comfort in the fact that the levels of toxins are certainly considerably lower as well as the fact that vapor is denser and heavier and therefore can be blown down and away from others so as to not "linger" in the air to be inhaled with their next breath! Be respectful and prudent. As with all we do: If you think there is potential to harm others, don't!!