I was ten years old back in nineteen fifty eight. My Grandmother dropped me off at the theater, The Lowe's Paradise (a grand movie palace) in the Bronx, while she went shopping. I wanted to see the first of the double feature,"The Fly". I was fascinated by the colorful lab scenes, The hydraulic press got to me, as did the fly's head on the guy, and the the spider web finale. The movie was a classic, but I also remembered "Blood Rust" from the co feature. That was not it's name. It's title was Space Master X-7. It was in black and white, I remember the bubbling blobs in the bell jars. The image stayed with me. Far more so than the adult storyline. I was too young to appreciate the non monster parts. I would like to see this one again as an adult. It reminded me in retrospect of the Quartermass films. Particularly "The Creeping Unknown" I had been mistakenly calling the film, "Rocket-Ship XM" An altogether different film with a somewhat similar title.

Like the previous commenter I also saw this as a child, and in the spirit of his well written comments, I will add it was at the old Nile Theater in South Minneapolis. I was about 10. I had nightmares about this film for many days after, and to this day 50 years later, I still remember the title! Definitely not for the discerning adult, but my sci-fi grandson would love it! Solid 8 rating for the memories and thrills. However, it is only marginally acted. The special effects are good, and the airplane scene mentioned is thrilling. The oozing through the vent duct in the lab will remind you you are not safe even in your own home. I'd sure like to see this again!

I saw this movie only one time... in 1958, when I was seven years old.I still remember it to this day which is a good indicator of the impact that this movie left on me. The image that stands out in my mind is that of the Blood Rust virus. I can still see it in my mind after nearly fifty years. I can still recall the pulse of urgency that ran throughout the movie. In all the years that have passed since I saw this film, I have only run into one person who even recalled it. I was beginning to think that I had imagined its existence.After reading the review on IMDb, I can only assume that I saw it the same day that I saw "The Fly" in a theater on Solano Avenue in Berkeley, California. (In the 1950's, kids could see two movies and a bunch of cartoons on a Saturday afternoon for a quarter.)If there is a copy of this movie available on DVD or VHS, I would surely love to purchase one.

As a 12 year old, this was the most mind blowing movie of my childhood. Much more scary than the "A" movie, The Fly (great movie), released with it. I would always think that the mold would get into the house and eat me away (something like Necrotizing Fasciitis). Even though this movie is in B&W, the movie, for me, was much scarier than the BLOB. This is one of the two most psyche scaring movies of my childhood...the other being GOG. Honorable mention for this segment would go to the Crawling Eye, Invasion of the Saucermen, and War of the Satellites. My dad was a sci-fi nut as much as me and the two of us would see every new release as soon as they came out. These movies are very much part of my upbringing/childhood. I would love to get a copy of Blood Rust/SpaceMaster X7.