My Two Year Old Son Was Laying In My Room

My two year old son was laying in my room for a nap. I went to the rest room came back and he had a 0.6fl. Oz bottle of English leather cologne on the bed. The whole bottle was gone and I didn't find any wet spots in the room at all. His breath smells like it. I believe he drank the whole bottle. What should I do and what could happen to him????