hallo
what helped my girlfriend before she had breathing issues in 1995.
In the air their is bacteria .
If you sweep perfectly the flour once a day of your flat ,
and once a week you mop up perfectly the flour using washing powder ,
Or you vacums your carpet often .
the nuraber of bacteria stay at a normal level .
if no sweeping they like multiplied evry day .
And a good sport jogging or cycling two or three times a week .
Makes you stronger , increase the metabolism . You breath better after .
eh bye