Carpet Beetles are very destructive and very invasive beetles but adult carpet beetles are not harmful to humans since the adult carpet beetles do not bite humans.
Although the carpet beetles may crawl across your skin and leave marks or itchy red skin but they do not bite and the itchy red skin will go away without any problems or treatment.
Still it's best to bring in an exterminator who has experience and tools and pesticides to properly get rid of the invasive and destructive carpet beetles.
Also the carpet beetles are more dangerous to humans and more destructive in the larvae stage so if you notice carpet beetles you should get an exterminator in soon to get rid of them before they spread too far.