Malaysian Fire and Rescue Service (JBPM)said the toxic gas reading level is not harmful today.
Johor JBPM director Datuk Yahya Madis said there were 15 hazardous chemical gases also detected around the pollution site but the reading was below 3 ppm,which act as alert.
Following a hazardous chemical waste pollution in Sungai Kim Kim,Yahya advise people to wear masks for safety incase there is an unexpected release of chemicals occured.
