Carpet beetles are incapable of biting a human in any perceptible way. Their mandibles are not large enough to inflict a painful bite and they carry no venom. Due to this there are virtually no health concerns from being bit by a carpet beetle.
However, there are potential health concerns when the beetles gain access to human foods. Cross-contamination can become a big risk in these food situations and this should be taken seriously.
With Halloween just around the corner, its time for larger-than-life creepy, crawly creatures skittering across lawns, lurking in dark alleyways and dropping out of nowhere to frighten their hapless victims.