The opium latex/gum comes out as a yellowish substance and the opium poppy pods are cut in the evening to let the resin/latex/whatever ooze out during the night and it turns brown during the night or blacksih . It is best to let the opium gum dry out as long as possible to let the water content lower making the opium more alkaloids by weight and less water weight . Some opium smoking people refine the opium, but mainly it is sun dried and allowed to dry out as muc as possible before smoking,as the drier it is ,the less % of the total opium gum or tar-like stuff is water.That means more of the opium alkaloids by weight and less water % and weight ,meaning the opium is more potent with less water..so it's possible I'm sure to smoke it after it has oozed out overnight and then dried for a while, but you will get less buzz for the weight, it's better to sun dry it at least to lower the % of water and make it more potent
Also an opium pipe is best for smoking or even a weed pipe, as opium does not smoke very well when heated indirectly on foil, it needs a flame to touch it at least like in a pipe, and opium pipes use some method of heating the opium and then putting it in the pipe and using a flame to fire it up again if let go out. Use a weed pipe at least and put some opium,preferably dried properly on top of some weed or tobacco even and smoke it similar to weed or hash..