Again, this is another mess, the way to try to prove how Zyklon B can kill people is just a way to make you look away from the main point: IT'S A REALLY BAD WAY TO KILL MILLIONS OF PEOPLE.
Even if you can kill people with it, it's not worth it, it's not economic, there are shit ton of other better ways to do it. You can simply put them in a room and let them die from hunger, you throw them from a cliff, put them to work until they are dead. Basically ANY OTHER METHOD THAT THE SOVIETS WERE USING DURING THE EXACT SAME TIME PERIOD IS BETTER THAN WHAT THE NAZIS WERE DOING. Trying to kill MILLIONS of people with Zyklon B is like trying to using some bad insecticide. Yes, you can kill people with it, but it's not a good way.
It's is a fact that Zyklon B was used in that time to kill bugs and lice, that it could also be used to kill humans doesn't prove that it actually was used to kill humans, and common sense tell us that it probably wasn't. Again Germany was in war, and spending shit ton of money to kill people in such a complicated way was probably not the smarter move.
Yes, they had them, and yes they used them. People die in camps and specially in war, every camp from every country had them, and they worked. Again, that doesn't mean that they were used to put gassed people in there.
None of the images really prove how they could use those crematoriums to put 12 million people (there were 6 million jews according to them, but again don't forget the polish, french, soviets, etc…).
Considering also how they lost the war and how the camps were raided by both allies and soviets units, how it's possible they managed to succesfully cremate EVERY SINGLE PERSON IN TIME and do not leave a single trace of people gassed? There wasn't anybody in the list waiting to go to the crematorium that they could have saved and see that, hey, this guy died for being gassed.
No, there wasn't any, because again they weren't cremating people 24/7 or killing people in masses, they used it normally for people who died under those conditions that well, they were many, because it's a war, and people die.
Let's all remember how the red cross went through this camps and didn't find anything extraordinary about them.
There are tons of falacies like denying everything because one guy is an artist but then going to another random source and saying that this one is correct.
When debating about the holocaust you must not fall into the jews lies, and you guys must remember this: you don't need to prove anything, it's them.
Sound weird, isn't it? But you must remember that everyone is innocent unless there's proof, and there's not definitive proof about the holocaust. There are no bodies. There's not a real motive to do this (being really bad and wanting to kill for being edgy is not a good reason). Even if in the "gas chambers" people were killed or there were cyadine in the walls, that doesn't prove that they were actual gas chambers if they don't look or work like one. Again, the room could be used to remove lice.
If you check what they say, they are not trying to prove the holocaust, they are just trying to make it so "maybe it could happened", and you should say clearly that "maybe" is not enough. If they can't give real proof then you win. And right now most "proof" they have is false since it hasn't go through the correct procedure and has been modified so it's impossible to know if it's real or not, and in case of doubt, innocence prevails.
How is possible that the allies, that managed to crack open all the communications from the nazis to win the war didn't have any single conversation, document or some kind of intelligence about this? How is possible that there weren't any traitors or spies giving any kind of information about this before ending the war but however there were shit ton of traitors and spies giving information about literally ANYTHING ELSE?
Do you really think that the nazis were like, OH YEAH SURE LET'S TELL THE ENEMIES EVERYTHING ABOUT OUR POSITIONS OR LOGISTICS BUT LET'S MAKE SURE NOBODY SAYS NOTHING ABOUT KILLING JEWS, SURE THAT WILL HELP WINNING THE WAR.
It's not a coincidence that all "proof" about the holocaust appeared after the war, when something so massive that involved so many people and was able to kill "at least 6 million people" was something that should have leaked somehow before.