hi sir/mam,your nose blisters may not be related to teeth infection.the following are the probable causes:
1)
acne vulgaris(
pimples)
2)carbuncles caused by staph.
squeezing or rubbing over the blister shouldn't be done as it results in spread as well of secondary infections.you must have a physician visit in the following cases:
1)associated high grade fever
2)if it persists for more than 2 weeks.
3)if facial areas are affected as it can cause speed of infection to brain
sinuses.
diabetes,any immunocompromised conditions are risk factors.
treatment options are
1)antibiotics topical and oral if necessary.
2)analgesics like NSAIDs.
3) anti-bacterual soaps
4) clean, warm , moist cloth has to be put on the blisters for atleast 3 mins each time . It helps in better
drainage.
Hope my answer is clear. other health issues if any, kindly let me know . Thank you. take care bye .