Lawmakers in the upper house of the legislature – the Rajya Sabha – were forced to evacuate twice on Thursday due to the foul smell.
A spokesman told the media the smell was due to “poor maintenance”.
Congress party MP Rama Chandra Khuntia told the BBC: “"Everyone in the Rajya Sabha, panicked. Initially, we thought it was a gas leak. But then we realised the stench emanated from the toilet."
"We were told the smell from a toilet adjacent to a canteen found its way inside the House through air-conditioning ducts," Mr Khuntia said.
The incident comes three days after brief power cuts interrupted parliament proceedings.
Television news channel NDTV quoted the main opposition party BJP's Ravi Shankar Prasad as saying: "We talk of nuclear safety, we should at least ensure safety of smell in the House."
- UKAsian Staff