helloall

I have recently taken a drug test for a large company. I have not smoked for about 40 days. I am a small person who weighs about 105 pounds and eats really well. At any rate, The night before I took the test I happened to be at a friends house who surprised me by taking me into a HUGE growing operation that he had going on in his house. There must have been hundreds of plants. The smell was extreme. Although no one at the house was smoking is there a way I can test positive just from being stuck in a room with tons of plants? I know this may be a dumb question since none of it was burning but I am completely freaked out! The first test I took came back diluted so for this second test I drank hardly any water. Any replies are greatly appreciated!! Thanks.