Abstract: The present invention relates to an aerochamber for inhalation of medicinal products in aerosol for the treatment of respiratory ailments. The aerochamber includes a tubular body including a proximal end with a front cover adapted to mount a mask to cover a mouth and a nose of a patient; a distal end with a rear cover adapted to connect to a container with a pressurized pharmaceutical solution to be inhaled, the rear cover includes an annular wall including a hole that matches with an opening on the distal end; a translucent cap having a front wall, an inside wall, a cavity, an opening on the front wall, the translucent cap is placed on a section of the annular wall of the rear cover; an inhalation sensor housed on the cavity of the translucent cap.