Selling a previous marijuana grow house

[Ryan Yu]

Hi, I own a house in California currently valued at about $2M. About 10 years ago the tenant was found to be growing many  marijuana plants inside the house which I didn't know about. Luckily, my home insurance policy covered the cleanup and rebuild of the affected parts of the  interior of the house. There was no mold found inside the walls. Electrical wiring has been redone to normal. Since then, I have rented the house to other tenants and there are no complaints from them. Now I am thinking about selling the house. Do I have to disclose to buyers that this was a marijuana grow house in the past even though everything has been cleaned up and there is no mold? From what I've read online, it seems I have to disclose this but what would happen if I don't disclose this to buyers? If the buyer finds out about it after they bought the house can they take legal action against me even though everything has been cleaned up and there is no mold or chemicals?