Why do general practitioners prescribe antibiotics for sore throat? Grounded theory interview study

Do any GPs use their sense of smell when deciding on an antibiotic
prescription? I find that some sore throats smell of decaying flesh,
reminding me of bacteriology practicals, whereas others look red and are
exudative but don't smell. It seems to me from experience that this smell
is associated with streptococcal infections. I have no statistically
significant swab results to confirm this, but if I am weighing up whether
to prescribe, a foul smell will make me decide to give an antibiotic. The
smell isn't just halitosis since it is the same from patient to patient.
Any microbiologists' views on this?

Competing interests:  
None declared