Nebulizer and method of operation of a nebulizer comprising a cupel capable of containing a liquid and a vibrating member (4) capable of emitting, under the effect of a control signal originating from a control circuit (10), an ultrasound beam making it possible to transform the liquid into mist, in which the vibrating member (4) is sensitive to the sound wave produced during the transformation of the liquid into mist and detection means (14) detect the presence and/or the absence and/or the value of a sound signal originating from the vibrating member, or of a signal corresponding to a sound signal originating from said vibrating member.
