Speaking into a rotating fan is generally not recommended, as it can have negative effects on your voice and throat. When you speak into a fan, the rushing air can cause your vocal cords to dry out quickly. Dry vocal cords are more susceptible to strain and irritation, which can lead to a hoarse or raspy voice.
Additionally, the turbulent air produced by the fan can create a harsh environment for your vocal cords. The force of the air may cause you to speak louder to be heard, putting further strain on your vocal cords and potentially leading to vocal fatigue.
Repeatedly speaking into a rotating fan or subjecting your voice to such conditions may increase the risk of developing vocal problems over time, such as vocal nodules or vocal cord inflammation.
To keep your voice healthy, it's best to avoid speaking directly into a fan or any other source of strong airflow. If you find yourself in a situation where you need to communicate in a windy environment, try to speak at a lower volume and take breaks to rest your voice and stay hydrated. If you frequently experience voice-related issues, it's a good idea to consult with a speech-language pathologist or an ear, nose, and throat (ENT) specialist for further evaluation and guidance.