What a stretch that is. Demonize one form of voluntary smoke inhalation and negate the rest:

Marijuana has chemicals in it that does more damage than lets say, smoke from a couple of logs on fire.
Also you think if you saw something or did something and had no choice about it that it would count as a sin...?
And this is my own opinion, but i think most popes aren't actually christian, a i'd say at least 60% percent of catholics don't even know enough about hwo to be saved to be saved.

Bolded - Semantics. It's ALL still voluntary smoke inhalation. Within reason, your body is able to cope and continue to thrive. In abundance, it is detrimental to the body. It goes both ways for the example you have provided. Saying one voluntary form of smoke inhalation is not a sin, but another is a sin is just incorrect.

Italicized - You always have a choice, even when you might feel as if you do not. It's these choices that determine the type of person you really are.

This is also my own opinion. I just strongly disagree with your selective interpretation of 'intentional' bodily damage.

How is smokeing marijuana not intentional bodily damage... Please prove this to me scientifically.
if some1 walking by you is smokeing and you do not notice it and inhale it or you don't think about it at that moment, its not a sin, but if you picked up a cig or anything else that involves smokeing and do it intentionally, knowing that it causes bodily damage, its a sin. Even if you do not know its a sin, for God said ignorance is a sin.

How is sitting next to a campfire not intentional bodily damage?! Your example of a little fire with a few logs is no different from intentionally damaging the body through smoke inhalation!

You know, I hope, that any smoke inhalation is bad for you. You know that wood fires produce smoke. You know that 'willingly' sitting next to that fire will put you 'willingly' in a position that you will inhale smoke.

You've drawn a line of what minor smoke inhalation is ok and not ok. You've centered your dislike around a very localized group of examples and that's not right!

You don't have to like it or ever do it, but calling anyone that does enjoy it within reason a sinner just isn't right.

Thats a catholic picture.

And altering your state of mind is considered a sorcery.

It was just a picture I found to represent the idea of incense burning. Irregardless of the pictures origins, incense are burned in Christian churches.

As for altering your state of mind: Keneh Bosem

A reference for this item is made in Exodus. Research indicates it is a derivative of cannabis and was used in essential oils. A pretty gray area for sure, but one worth looking into.

Not all Christian churches burn incense, usually this is reserved for the liturgical ones. Additionally, there is a vast difference between inhaling (accidentally) smoke from a fire, exhaust from a car, or passed gas from your grandmother, than intentionally lighting something on fire and inhaling it with full effect and intent to get something out of it, eg, a high (whether it's the effects from a cigarette or marijuana, or whatever).

Here is a list of verses I found via a quick search that back up the idea of staying sober:
http://www.openbible.info/topics/being_sober

Got a good laugh out of the bold

I agree with you on the difference in the severity of the inhalation and how quickly that will add up, but my argument was more towards knowingly sitting next to a campfire (or other similar such things), knowing that the smoke from it will be inhaled by you and knowing that the smoke is damaging. It's not an accident if you put yourself in harms way. It's a risk.

We both agree on the severity issue, but what if (for the sake of the conversation and my point) we only took one hit of marijuana. In moderation we can see the voluntary inhalation of harmful smoke (in any form) is very controlled. Much less, in fact, then the amount we would willingly inhale sitting next to a campfire. Ergo less damage.

Moderation on all fronts is the focal point of my stance.

Also, thanks for being the first person to clearly post the Bibles stance on the subject.

Smoke from a campfire doesn't cause permanent damage in my knowledge...