A videograb shows the bees opening the bottle.
The fire started in a dining room and spread to the other rooms, killing five elderly people and a caregiver, said Aaron Barbosa, spokesman for the Sao Paulo Fire Department, on Saturday.
Videos circulating on social networks show the city of just over 12,000 inhabitants being swallowed by the dust storm in the late afternoon.
News reports said the four people were a Brazilian senator, a deputy mayor and two other people, one of whom was the pilot.
Four firefighters were hospitalised after battling the overnight blaze at Badim Hospital and about 90 patients were transferred to other hospitals, according to the fire department. Authorities said that a short circuit in a generator could have sparked the blaze.
The fire broke out at dusk on Thursday at the Badim hospital in the north of Rio, sending medical staff and relatives into a desperate flurry to try to evacuate scores of patients.
Contacts between Riyadh and Damascus had gathered momentum following a landmark agreement to re-establish ties between Saudi Arabia and Iran, a key ally of President Bashar Al-Assad, a regional source aligned with Damascus said.
Saudi Foreign Minister Faisal Bin Farhan Bin Abdullah made a phone call to his Iranian counterpart, Hossein Amir-Abdollahian, in which they exchanged congratulations and blessings on the occasion of the blessed Month of Ramadan.
In London, for the first time, Ramadan will be celebrated with a light display in central London, in Piccadilly Circus, no less.