Topic: These Sex Demons are Vicious Murderers
These sex demons are masters of moving and manipulating fluids between lungs and the nasal system. Other demons work to control face muscles to keep the mouth closed. These two sets of demons work together to keep the mouth closed while the nasal passage is flooded, blocking air flow. So when the sick and week sleep, these demons work together and suffocate their host to death.
Another evil these sex demons do if they become stong enough, is to cause the host to re-breath the air they exhale. This is done with "power of the air", the ability of demons to control air. The demons can cause the host to re-breath exhaled air separately or in addition to the above paragraph. Demons do this to cause difficulty breathing, or suffication and death.