Kirukaran vayu governs involuntary reflexes like sneezing and blinking. It is one of the five upa-vaayus that support the main five vaayus in the Siddha system.
In Siddha medicine, the ten types of vaayus (vital airs) are each responsible for specific physiological activities. Kirukaran vayu is responsible for reflex actions such as sneezing, blinking, coughing, and yawning. It functions in the upper parts of the body, particularly the head and face, and helps eliminate irritants through sneezing and similar actions.