For maximum assurance preventing influenza or flu, the patient should be vaccinated with inactivated influenza vaccine (IIV) once a year. The vaccine is needed especially for those who are of greater risk to have a flu, including pregnant women, children, and persons with serious medical conditions. 
        
             
        
        
        
Carbon Monoxide.
- It is dangerous because carbon monoxide has a higher affinity for hemoglobin than oxygen does. Your body cannot use carbon monoxide to make ATP, so if there is carbon monoxide attached to hemoglobin instead or oxygen you cannot oxygenate your cells. Thus they will die. 
 
        
             
        
        
        
Difficulty sleeping or bothered by noise but i’m sure it’s difficulty sleeping
        
                    
             
        
        
        
True, the time of change is commonly called puberty. Hope it helps :)