Yes, probably.
Yes, the smell of weed can stick to walls, furniture, and other surfaces, especially if the area is not well-ventilated.
Yes, microwave waves can penetrate through brick walls.
no
Yes, radiation has the ability to penetrate through walls depending on the type and energy level of the radiation.
Rats may emit a distinct urine-like odor, which can become more noticeable if they are living in walls. This smell is often described as musty or ammonia-like. Other signs of rats in walls include scratching sounds, gnawing noises, and droppings.
The airborne molecules settle in on furniture and walls in a house. That, coupled with an enclosed space, will allow for the strong smell of smoke to lurk even after the visible gas has dissipated.
Photographs can't... infrared is a possibility.
Allows it to penetrate more walls, and does a little more damage
Yes. It's not an overwhelmingly strong odor if they're dry, but you can smell them.
white
To effectively eliminate the lingering weed smell in your house from the previous owners, you can try deep cleaning the carpets, walls, and furniture with a mixture of vinegar and water. Additionally, using air purifiers, opening windows for ventilation, and using odor-neutralizing sprays can help remove the smell.
infrared