Bedbugs warning: Possible sounds and smells warning you may be at risk of an infestation

BEDBUGS warning: Bed bugs are flat, rust-coloured parasites about five millimetres long. The bugs have developed resistance to chemical treatments, making eradication of the pests more difficult. Is there a specific smell or sound one should be aware of warning you may have a bedbug problem?
Source: Daily Express - Health - Category: Consumer Health News Source Type: news