Highly bendable and smoke free degradable nanomaterials modified paper based electrochemical biosensor for efficient detection of protein biomarker

•PEDOT:PSS and Borophene nanosheets modified conducting paper.•Cost efficient and flexible biosensor for protein biomarker detection.•Environment friendly biosensing platform with smoke free degradation.•Ultralow LOD (0.49 ng ml−1) and wider LDR (1 ng ml−1 - 60 µg ml−1) for swine flu detection.