National Library of Medicine, for example, showed that the angle of a webcam can affect how tall a viewer thinks a subject appears, and that individuals viewing a subject from a lower position “tended to act contrary to their own interests more frequently than those who looked down at the other person.”
This implies that a dirty webcam can indeed become a professional drawback. That being said, webcams and other sensitive electronic devices are well-known for being prone to scratches and harm. To clean one without potentially worsening the blurry image, you should use a soft cloth and an appropriate cleaning solution, while steering clear of harsh chemicals that might damage the glass. Additionally, there are some precautionary steps you can take to keep your webcam clean from the outset, such as proper positioning and storage.