Hi...
Welcome to HEALTHCARE MAGIC..
I have gone through your query and can understand your concerns...
As per your complain and presentation the symptoms, bad smell in nose along with runny nose and
dizziness are commonly seen in case of
sinusitis when there is infection in the sinuses and runny nose is exactly discharge coming from the sinuses..
You should consult an Otolaryngologist and get evaluated and along with a thorough clinical evaluation,a PNS VIEW x-ray and an MRI of salivary glands can help in confirming the cause and treated accordingly..
For sinusitis he/she can advise you to take antibiotics like
Levofloxacin or Clarithromycinor
Augmentin, anti-inflammatory medicine like Ibuprofen, steam inhalations, steroid nasal sprays, saline
nasal irrigation and use a humidifier in your room.
Steam inhalations with a few drops of Eucalyptus oil in the oiling water can help in relieving bad smell..
Hope this information helps..
Thanks and regards.
Dr.Honey Nandwani Arora.