Nigeria, Oct. 22 -- Schools in parts of Ogun State have been forced to close on Wednesday after more than 100 pupils were reportedly hospitalised following another exposure to an offensive gaseous substance, renewing concerns over recurring emissions in the Ijebu part of the state.

The affected pupils are from schools in ljebu Ode, Ago Iwoye and ljebu Igbo and were taken to the State Hospital in Ijebu-Ode, the General Hospital in Ijebu-Igbo and other health facilities after some reportedly experienced breathing difficulties and fainted.

Among the schools worst affected were Ijebu-Igbo Girls Grammar School, Anglican Girls Grammar School in Ijebu-Ode and Itamerin Comprehensive High School in Ago-Iwoye.

The Ogun State Government, in a sta...