Deceased was identified as Mamali Pradhan, wife of Basant Pradhan, a bus driver, who was away from house when the incident took place last evening, they said.
The woman's 12-year son also got seriously ill and was admitted to M K C G Medical College and Hospital here.
A relative was suspected to have given poison to them mixing with soft drinks, police said adding the woman's ten-year-old daughter survived as she had not taken the soft drink. PTI