Cordon is in place while chemical is identified. Ambulance staff are treating nine people.
M6 closed in both directions between J3 A444 / B4113 (Nuneaton / Bedworth / Coventry) and J4 M42 / A446 (Coleshill), congestion on M6 to J2 M69 / A46 (Coventry) Northbound.
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Tens of thousands of fans of Arsenal and Aston Villa have descended on Wembley Stadium today for the FA Cup Final.
Turning wet overnight but brighter with showers tomorrow.
Becoming cloudy, wet and breezy overnight.