when i was in a ceremony with a well known eq shaman,
we were being healed and he gave us this strong agua florida ( alcohol ) in our hands to inhale the vapours, and sometimes he dropped some 5ml on the head,
he explicitely told we were not allowed to snort of sniff the agua florida, because that is used for extreme healing purposes ( healings that most of us dont need, i guess more medicinal ). And u would get into a coma state when not proper guided by the shaman, u would die of it.
he gave us also 4 times during the ceremony tobacco water to sniff

i liked it to be honest, but a lot of pple were allready vomitting even before they served the first aya cup.
He told us it opens our energy levels and make us ready to enter spiritual world.
Also this tribe ( shuar ) the headshrinkers from the amazon

told me that they drink the tobacco water to go into spiritual dreams. And even use it to stuff the water in their rectal parts and then go in trance for hours and hours.
For them tobacco is one of the most powerfull substances on earth.
When i snorted the tobacco water i must say it was like a cup of coffee * 100.
When the ceremony was over, in the morning, they gave us the last tobacco snuff water, and we were all awake like never before. i only could get some sleep a few hours before the next session

and next day the same
so how to use the agua florida, i dont think its usefull for self administration or something, its for healing that the shaman does, and i believe a big knowledge has to be obtained to even use this healing alcohol