It’s always a mistake to get your knowledge from the movies, but that bit in the film Sorceror (Itself a remake of Wages of Fear) about the nitroglycerine draining out of old untouched TNT unless it’s “turned” on a regular basis has the “ring of truth” to it.
If you haven’t seen the film, it concerns several cases of TNT that hadn’t been turned in a long time, with pools of nitroglycerine in the wrapping at the base. The guy who reaches in to feel it withdraws a wet hand with liquid drops on it, and gazez in horror. He shakes his hand off carefully, and the droplets make little “cracking” noises when they hit the ground and explode from the shock. The rest of the film involves very carefully packing the boxes in shockproof circumstances and driving it cross country. From what I’ve read, it is true that the nitro can drain out of the TNT sticks, leaving behind inert clay which originally acted to prevent the nitroglycerine from exploding.
No way would I stay in this hotel.