Related Clues:

• Jump at a noise, e.g.
• Take a deep breath
• Show one's emotions
• Strike back, say
• Retaliate
• Checkup request
• Check the cologne
• Lung function
• Act in opposition
• Strike back, e.g.
• Hit back
• Do a double-take, e.g.
• Doctor's directive
• Respond to stimulus
• Gulp