Bomb or Drug sniffing dogs?

I am crossing the EDMONDS FERRY in WASHINGTON STATE and i will be bringing fireworks, and some illegal substances. On 4 July weekends in the past, there have been dogs checking cars for stuff like drugs,fireworks,bombs, etc. We have a tribal card which allows us to carry fireworks across the ferry, but obviously not drugs. So if we hide the drugs in the fireworks, will the dogs be able to tell th difference and bust us? Otherwise the cops will just think the dog smells fireworks right?