I have developed this pet theory that humans have grown fond of fire and will feel secure in its presence. How do they know they're at a fire instead of just ba

I have developed this pet theory that humans have grown fond of fire and will feel secure in its presence. How do they know they're at a fire instead of just basking in the sun? When they are inhaling, I mean smelling, its fresh smoke of course! I don't find it far-fetched to assume that an affinity to fire was selected for over the last millennia. Why, we even have a mutation that makes us less susceptible to carcinogens in smoke compared to other mammals. That would make smoking, and smoking indoors, an activity that replaces the open fires we're accustomed to. Standard disclaimer for evolutionary theories: They are ill-suited to determine social policy.