The answer to 'why is my bee odor' is that you are likely experiencing the scent of a bee swarm or colony. Bees release pheromones that create a distinctive odor, which can be especially strong when a new colony is being established or when the bees are swarming. This odor is a natural part of the bees' communication and colony-building process.
The bee odor may be more noticeable if the colony is located near your home, such as in a wall void, attic, or other hidden space. While the smell is not harmful, it can be unpleasant for homeowners. In most cases, the odor will dissipate once the bees have fully settled into their new hive location.