To sleep at home as if in the nature, it is possible to open the window to get fresh cold air.
Also, it is possible to take a mask like the one which is used in the medicine for the artificial breathing of the patient, connect to the mask a long pipe, put the end of the pipe outside from the window and put that mask on the face. That way the user will lie down at home in comfortable conditions, and will breath by the fresh air from outside through the pipe connected to a mask.