Inexpensive spray suit:
A good Binks respirator with fresh cartridges and particle filters, a cover for your head and face,
a pair of sealed eye goggles, a pair of good surgical gloves, clothes to protect your body, arms, legs and feet, sealing the pants to the socks with rubber bands or tightly wrapped tape and a long sleeved sweat shirt with the gloves pulled over the end of the sleeve and wrapped tight.

Total cost: $ 45.00 (and you can reuse the mask). Just keep it in a sealed bag and it is good for 8 hours in exposed air. Remember, the charcoal cartridge is filtering air every second it is exposed to it. There, sealing it in a resealable bag extends the usefull life.

good luck