The answer to 'bed bug odor' is that a musty, sweet odor is a common symptom of a bed bug infestation. Bed bugs release pheromones that create this distinctive scent, which can help indicate their presence even before you see the insects themselves. This odor is often described as similar to coriander or over-ripe raspberries.
If you notice this type of unusual odor in your home, it's a good idea to inspect your bedding, mattress, and other furniture carefully for signs of bed bugs. These can include small brown or reddish-brown bugs, shed skins, or dark spots from their droppings. While some DIY treatments may be effective for minor infestations, it's generally recommended to call in a professional pest control expert, especially for larger problems. They can properly identify the issue and use the right techniques to eliminate the bed bugs and prevent them from returning.