Dreams about drugs after quitting are not always about relapsing, though they can be.

Here's an interpretation about a dream that's actually good.

When I quit doing drugs, I had a dream about a rubbermaid container (the size of a lasagna pan) full of them. I hid them so people would not see them.  Later, my husband was pulling them out of the hiding place and the container tipped on it's side and looked like the top was loose--though none appeared to have fallen out.

When the container was open, the previously full container was empty except a very small amount that turned a greenish color... which it shouldn't have been.  The color made the drugs very undesirable.

Intepretation:  Something that was hidden is gone.