No, formaldehyde is generally no longer recommended for use as a disinfectant. While it is effective in killing a wide range of microorganisms, including bacteria, fungi, and viruses, it is a toxic substance and can cause a variety of adverse health effects, including cancer, respiratory problems, skin irritation, and eye irritation. Formaldehyde has been classified as a carcinogen by the International Agency for Research on Cancer (IARC), and its exposure is strictly regulated in many countries.

Due to these risks, formaldehyde is being replaced by safer and less toxic disinfectants, such as quaternary ammonium compounds, hydrogen peroxide, and sodium hypochlorite (bleach). These alternatives are generally less hazardous and more environmentally friendly, while still being effective in disinfecting surfaces and eliminating harmful microorganisms.