Space Master X-7

Dr. Charles Pommer (Paul Frees) is a scientist researching extraterrestrial life. When a space probe returns covered in fungus, Pommer throws himself into researching it, only to discover that this substance -- which he names "Blood Rust" -- is deadly when in comes into contact with humans. After Pommer dies from exposure to Blood Rust, a pair of government agents (Bill Williams, Robert Ellis) must hunt down Pommer's former lover, Laura (Lyn Thomas), who is unwittingly spreading the pathogen.