The smoke flavour part is weird, perhaps they were smoked dried and that's where the flavour comes from? It's not like it has a "sweet lavender flavour/scent" that is going to be added. I think it should be ok, though obviously if your rabbits take to eating it, I would take it away. When I first started using wood pellet litter with Bandit, he did sample one or two, but after that he's never eaten one since.